/*
 * @(#)Encodes.java	2016年11月9日上午11:47:37
 * Copyright 2017 All rights reserved.
 */
package com.example.zk.util;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.lang3.StringEscapeUtils;

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;

/**
 * 
 * 类<strong>Encodes.java</strong>{此类功能描述}
 * @author: wangyf
 * @version: 1.0 Date: 2016年11月9日 上午11:47:37
 */
public class Encodes {

	private static final String DEFAULT_URL_ENCODING = "UTF-8";

	private static final char[] BASE62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();

	/**
	 * Hex编码
	 * @param input
	 * @return
	 */
	public static String encodeHex(byte[] input) {
		return new String(Hex.encodeHex(input));
	}

	/**
	 * Hex解码
	 * @param input
	 * @return
	 */
	public static byte[] decodeHex(String input) {
		try {
			return Hex.decodeHex(input.toCharArray());
		} catch (DecoderException e) {
			throw new RuntimeException(e);
		}
	}

	/**
	 * Base64编码
	 * @param input
	 * @return
	 */
	public static String encodeBase64(byte[] input) {
		return new String(Base64.encodeBase64(input));
	}

	/**
	 * Base64编码
	 * @param input
	 * @return
	 */
	public static byte[] encodeBase64(String input) {
		try {
			return Base64.encodeBase64(input.getBytes(DEFAULT_URL_ENCODING));
		} catch (UnsupportedEncodingException e) {
			return null;
		}
	}

	/**
	 * Base64编码
	 * @param input
	 * @return
	 */
	public static String encodeBase64String(String input) {
		try {
			return new String(Base64.encodeBase64(input.getBytes(DEFAULT_URL_ENCODING)));
		} catch (UnsupportedEncodingException e) {
			return "";
		}
	}

	/**
	 * Base64解码
	 * @param input
	 * @return
	 */
	public static byte[] decodeBase64(byte[] input) {
		return Base64.decodeBase64(input);
	}

	/**
	 * Base64解码
	 * @param input
	 * @return
	 */
	public static byte[] decodeBase64(String input) {
		return Base64.decodeBase64(input.getBytes());
	}

	/**
	 * Base64解码
	 * @param input
	 * @return
	 */
	public static String decodeBase64String(String input) {
		try {
			return new String(Base64.decodeBase64(input.getBytes()), DEFAULT_URL_ENCODING);
		} catch (UnsupportedEncodingException e) {
			return "";
		}
	}

	/**
	 * Base62编码。
	 */
	public static String encodeBase62(byte[] input) {
		char[] chars = new char[input.length];
		for (int i = 0; i < input.length; i++) {
			chars[i] = BASE62[((input[i] & 0xFF) % BASE62.length)];
		}
		return new String(chars);
	}

	/**
	 * Html转码
	 * @param html
	 * @return
	 */
	public static String escapeHtml(String html) {
		return StringEscapeUtils.escapeHtml4(html);
	}

	/**
	 * Html解码
	 * @param htmlEscaped
	 * @return
	 */
	public static String unescapeHtml(String htmlEscaped) {
		return StringEscapeUtils.unescapeHtml4(htmlEscaped);
	}

	/**
	 * Xml转码
	 * @param xml
	 * @return
	 */
	public static String escapeXml(String xml) {
		return StringEscapeUtils.escapeXml10(xml);
	}

	/**
	 * Xml解码
	 * @param xmlEscaped
	 * @return
	 */
	public static String unescapeXml(String xmlEscaped) {
		return StringEscapeUtils.unescapeXml(xmlEscaped);
	}

	/**
	 * URL编码,Encode默认为UTF-8
	 * @param part
	 * @return
	 */
	public static String urlEncode(String part) {
		try {
			return URLEncoder.encode(part, DEFAULT_URL_ENCODING);
		} catch (UnsupportedEncodingException e) {
			throw new RuntimeException(e);
		}
	}

	/**
	 * URL解码,Encode默认为UTF-8
	 * @param part
	 * @return
	 */
	public static String urlDecode(String part) {
		try {
			return URLDecoder.decode(part, DEFAULT_URL_ENCODING);
		} catch (UnsupportedEncodingException e) {
			throw new RuntimeException(e);
		}
	}

}
